@article{oai:muroran-it.repo.nii.ac.jp:00006653,
 author = {永野,  宏治 and NAGANO, Koji and 岩本, 佑介 and IWAMOTO, Yusuke},
 issue = {4},
 journal = {日本地熱学会誌},
 month = {},
 note = {application/pdf, An automatic detection algorithm of P-wave arrival time for a microearthquake is described. A function based on normalized fourth-order cumulant, kurtosis, is used to detect both provisional P-wave arrival time and the end of microseismic signal. The contrast function has the maximum value near the P-wave arrival time. After detection of the provisional P-wave arrival time, maximum likelihood analysis is applied to evaluate residuals between microseismic signal and its AR model, which is made based on the provisional P-wave arrival time. 100 of microseismic events are used to examine the performance of this automatic detection. Errors of the automatic detection are within 3 ms in the 97 events. 3 ms is as long as a quarter of a period of P-wave because dominant frequency of P-wave is 80Hz.},
 pages = {195--202},
 title = {尖度解析と最尤推定法を組み合せた微小地震のP波入力時刻自動検出法},
 volume = {29},
 year = {2007},
 yomi = {ナガノ, コウジ and イワモト, ユウスケ}
}